Typewriting machine



A. B. ELY

TYPEWRITING MACHINE Nov. 27, 1928.

Filed NOV. l5, 1926 3 Sheets-Sheet INVENTOR AZalzgo ATTORNEYS Nov. 27, 1928.k

A. B. ELY

TYPEWRITING MACHINE Filed Nov. 13, 1926 5 Sheets-Sheet @.5

INVENTOR A20/370,521?? 65 BY /Jgff MAQ/)WD ATTORNEYS Nov. 27, 1928. 1,692,890

A. B. ELY

TYPEWRITING MACHINE Filed Nov. 15, 1926 3 Sheets-Sheet 5 8o //z da@ 72, INVENToR -H- Alofjo'gf ATTORN EYS Patented Nov. 27, 1928.

FFCE.

PATEN ALONZO B. TLY,` F GRTN, NEW YORK, ASSGNR, BY MESNE ASSIGNMENTS, T0

L C SMTt 65 CORONA TYEVJRTER- ING., 0F S'YRA''SE, NEW YORK, A COR- PGRATON OF NEW YGRK.

TYPEWRTING MACHINE.

Application filed November 13, 1926 rhis invent-ion relates to typewriting machines; and more particularly to portable typewriting machines for which carrying cases are provided in which the machine is adapted to be inclosed for transportation.

rlhe principal objects of the invention are to provide improved means for readily conditioning the machine for inclosure Within a carrying case of minimum size; to provide means for releasing the carriage escapement and quie ily centering the carriage over the main frame at a single operation; to provide means o aerable to set a centering stop .for the carriage and simultaneously release the car- .u escapement to'permit the carriage to jump to centered position, said means being so constructed as to remain in set position until positively moved by inactive position; to provide a hand-operated actuating member operable directly on a enterino stop to set said stop in stopping position and hold it there when the hand of the operator is removed from said member; and so associate said stop with the eseapement releasing means of the machine that said stop will directly actuate said means and liolc i in releasing position When the stop shifted into stopping position; to provide a normally ineffective centering stop traveling with the carriage; and manually-operable means on the carriage for shifting said stop into a position for engagement with a fixed abutment to arrest 'travel of the carriage toward the left; which means is effective to shift said stop only when said stop is located to the` right of said abutment; to provide a centering stop on the carriage spring-urged to ineffective position and a. stop setting device on the carriage loosely engageable with said stop and movable to :atop-setting and stop-releasing position; to provide a normally ineffective centering` stop on the carriage acting to release, and hold releasedj the carriage escapement' when set in effective position; a. cam device on the carriage manually operable'to set and lock the stop in position for engagement with a fixed abutment and to release the stop; and auX- iliary locking means independent of the carriage co-operating With the stop to hold the hand to its normal Serial No. 1%;247.

stop in set position only while the stop is engaged With said abutment, said stop being re leasable from said auxiliary locking means by movement of the carriage toward the right; and to provide a carriage-centering and escapement-release-mechanism actuating means of sturdy and inexpensive construction; consisting of a minimum number of parts, and positive and certain in its action.

To the foregoing and other ends; Which will appear from the following description of the preferred embodiment of the invent-ion, the invention consists in the features of construction; arrangements of parts, and combinations of elements pointed out in the ap` pended claims.

In the accompanying drawings,

Fig. l is a fragmentary right hand side elevation of a portable typewriting machine in which the improvements are embodied in their preferred form, the several parts being in normal position;

Fig. 2 a fragmentary longitudinal sectional view of the machine; the parts being in normal position;

Fig. 3 a fragmentary longitudinal sectional view showing the parts positioned as at the end of a print-ing strolre of a type bar;

Fig. l a fragmentary longitudinal sectional view showing the escapement release bail of the machine actuated to release the carriage from the 4control of the escapement mechanism Fig. 5 a fragmentary top plan view of the machine; the platen carriage being removed;

Fig. 6 a bottom plan view of the escapement mechanism; With the parts in normal position as in Fig. 2;

Fig. 7 a section on the line 7-7 of Fig. 6;

8 a view similar to Fig. 6, but Wit-h the parts positioned as in Fig. 3;

Fig. 9 a section on the line 5)9 of Fig. 8;

Fig. l0 a perspective vievv of the carriage centering means, the carriage being omitted, and the parts beingv positioned carriage is one letter-space to centered position; Y

Fig. 1l a section on the line ll-ll of Fig. 12;

the left of as when the Fig. 12 a section on the line 12-12 of Fig. 11 showing,` the machine inclosed within its carrying case;

Fig. 13 a section on the line 13-13 of Fig'. 1;

F ig.. 14 a side view of the center stop mein ber on the carriage; and

Fig. 15 a front view of the center stop, attached to the carriage.

The improvements have been shown embodied in a. three-quarter-strike portable typewriting` machine constructed as more fully disclosed in the applications of H. A. Avery, @tto Petermann and E. L. Harmon, Serial Nos. 143,255 and 143,25?, both filed November .3, 1.926.

Gnly so lmuch of the machine has been shown :and will be described as is necessary for a full understandingl of the present invention. rlhe main frame, the platen carriage, the case shift mechan (including` the shift fra-me supporting the carriage) and the type bar act-ion are all constructed as disclosed in :said applications and substantially as in .the well known Corona Four machine. The main frame 1 of the .machine is provided with va transverse partition wall 1 lying` in an .upwardly and rearwardly inclined plane. The arcuate .type bar segment 2 is held to the front face of wall 1a so as .to lie in a similarly inclined plane, and the `type bars 3 are pi'voted on the usual arcuate pivot wire 1 in the segment to lstrike on the upper front quarter of .the platen 5, said type bars being actuated by the character key levers 6 which ,are pivoted on a .transversely extending pivot wire 7 held to a. fulcrum plate 3 .attached to .the rear face of wall 1, T he key levers 6 extend `down and then forward under wall 1a to the keyboard and are connected with the type bars by operatingl connections including vlinks 9.

rifhe platen 5 has its shaft 10 journalled in the end plates 11rL and 11b of the platen .carriage which comprises said end plates and a flat base plate 11 to which .are held. The carriage is mounted on a .shil'r fran'ie comprising a carriage bed 12, a pair .of depending` guide members h `l to the bed, and .a brace rod 111 connecting said guide members at their lower ends. 'l`he shift frame is guided to move upward and rearward parallel with wall 1n being supported with the carriage thereon in an upwardly and rearwardly inclined plane by pair of guide members 15 held to the `side wal-ls of mainframe 1. Guides 13 and 1.5 extend parallel to wall 1fL (between id wall and the back wall of frame 1), and the carriage bed 12 and carriage base plate 11 lie in par illel planes perpendicular to wall 1a over the space between wall 1wl and the back wall of frame 1. The shift frame. is shiftable to change case by means including a rock shaft 16 (journalled on the side walls of the main .edge of a bar frame), and a rock arm 1? on said shaft which is connected witn the adjacent guide member 13 and the rear end of a shift key lever 13. Suitable antifriction bearings are confined between guide members 13 and the e.oopei-atingY guide members The carriage travels along bed 12 on forn ward ball bearings 19 confined between raceway members 20 and 21 held to the carriage base plate 11 and bed 12, respectively) and a rear roller bearing 22 ournalled on stub shaft 23 held to a. bar 211 secured to the rear edge ofthe carriage base plate. 11), said bearingroller 22 being; located midway the ends of the carriage and traveling on the upper held to the rear enge of carriage bed 12. rEhe foregoing' parts are all constructed as in the iCorona Four machine and as disclosed in the applications above referredto and the application of Ely and Harmon, Serial No. 66,000, filed @ctober 31, 1925.

The escapement mechanism and escapement releasing` mechanism, together with the means for operating` the escapement mechanism, are constructed as disclosed in said application of Avery, Pet-erman and Harmon, Serial No. 1413,25?. rfhese parts include a rack 26 formed integrally with bar 211- on the platen carriage, a feed pinion 27 meshing with said rack. a shaft 23 to which pinion 27 is held (journalled in a bracket 29 held to the bottom of bed 12 by screws 30), a toothed escapement wheel 31 which is held to shaft 28, a dog rocker 32 having" pendent ears 33 and 3&1 pivoted on screws 35 carried on arms 36 and 37 of bracket 29, and a fixed or holdinn` den' 38 and a pivoted or feed dog 39 on the rocker, both 'arranged to cooperate with Wheel 31 to feed the carriage from right to left. The dop,` rocker is normally swung upward by a return spring l() (connecting,` pivot ear 33 with bracket arm 36) to maintain the forward end of a stop arm 41 (formed on pivot ear 34) engaged with the under face of bracket 29 and the feed dog` 39 engaged .by a tooth of the escapement wheel 31, as shown in Figs. 2 and 6. The carriage is normally urged toward the left by a spring drum 42 supported on the carriage bed .12 at L13 and having' the usual draw-band or cable 14 attached at one end thereto and attached at its other end Vto a screw 45 tapped into the .bottom of the carriage base plate 11' near the right hand end of the carriage. Cable 414i passes over a pulley 16 journalled in a slot 17 in carriage bed 12 and is provided at its free end with the usual anchor hook for .engagement around the shank of screw 115.

rlhe dog rocker is movable from the position shown in 2, 6 and 7 to that shown in Figs. 3, 8 Vand 9 on the printing strokes of the type bars by means of a universal bar 13 which vibrates in a recess 119 in the rear 'face of segment 2 in a path perpendicular to the planes of said segmentand wall la. The universal bar has side arms 5() vand 51' eX- tending rearward and downward through wall 1a and offset inwardly at their rear ends. T he inwardly offset ends ot the universal bar side arms are slotted, as shown, to slidably` guide and support the bar on' shalt 16, and said side arms are connected by pivots 52 with a rocking frame 58 journalled on the main `frame to swing about the axis 54. Vlhe side arm 5l is 'formed with a tappet or shoe 55 alongside its inwardly offset and slotted rear end adapted to push rearwardly on a contact lug 56 extending outward trom a pendent arm 57 formed on pivot ear 34 of the dog` rocker. The dog rocker is also adapted to be actuated by a tappet 56 formed on a tappet bar 59 operated from the space bar, not shown.

The universal bar is normally yieldably held in the position shovm in Fig. 2 by restoring means including a return spring, not shown. Upon depression of a character key the universal bar is moved rearward by the actuated type bar 3 and rocks the dog rocker to the position shown in Figs. 3, 8 and 9 to disengage the feed dog 39 'from escapement wheel 81 and move the holding dog o8 into wheel-holding position. On the return oli' the type bar the universal bar and dog rocker return to normal position and the carriage is arrested by feeding dog 39 after advancing one letter space.

Hand-operated means is provided for reeasing the escapement for running movements of the carriage. rlf'his means includes a dog-rocker-depressing bell-crank lever 60-61 having its rearwardly extending arm 61 formed with a lateral extension 6la overhanging arm ll ot the dog rocker, the :torward arm 60 el said bell-crank extending up through a slot 62 in carriage bed l2 into the space between said bed and the base plate l1 ot the carriage. 'l` he bell-crank is pivoted on a pivot screw 63 extending through bracket arm 37 and is normally held in the position shown in Figs. 2, 8, 6, and 8 by a return spring 64 connecting its arm 6() with said bracket arm 3T. The bell-crank is adapted to be rocked to the position shown in Fig. l by a hand-operated release l ail 65 whose cross-bar normally travels along with the carriage in liront orp bell-crank arm 60 which holds the bail in normal inactive position. rlhe side arms ot the bail 65 are pivoted on screws 66 and 67 tapped into the carriage end plates 11 and 11b, respectively, below and in rear ot the platen shaft l0, the bail side arms being` formed with linger pieces 65 extending upward behind the platen shaft to points above the level ot said sha'lit. l-y pressing forward on one or both linger pieces untilthey are arrested (as shown in Fig. 4f) by engagement with stop studs 68 and 69 projecting outward tiered reta from end plates 11a and 11b, respectively, bellcrank 60-61 is rocked until extension 61a thereof forces the dog rocker downward 'tar enough to carry both escapement dogs below and out of cooperative relation with the escapement wheel, thereby 'freeing the carriage from the control oli the escapement. Upon release of the bail the parts return to normal position, feeding dog 39 again engaging a tooth of wheel 3l to hold the carriage. A stop lugl on the bell-crank arm 61 normally engages the bottom Jface of bracket 29 to limit return movement ol the bell-crank and bail by spring 64. A stop lug lll on the dog rocker engages the inner end of bellcrank. extension 6la as a type bar strikes the platen to prevent overthrow of the dog rocker.

The machine is provided with linger wheels 70 and 71 the hubs 70V and 7l of which are mounted on the projecting ends or the platen shaft 10. In order that the usual carrying case of the machine (comprising base section 72 and the usual detachable cover section 73) may be ol' minimum width corresponding substantially with the distance between the outer ends of the linger wheels, it is necessary to position the carriage substantially centrally over the carriage bed, i. e. substantially midway between the two limits ot travel ot the carriage. lt is also desirable that the escapement be held released while the machine is in its ease, in order that shocks during handling ot the case may not damage the escapement mechanism, particularly the leed dog. Simple means has been provided whereby the carmay be quickly centered and whereby the escapement release mechanism is actuated by actuation of the centering means and held in escapement releasing position until treed by the operator.

il sheet metal stop plate 76 is pro-vided with a bearing aperture 7"? at its upper rear corner through which extends the shank of release bail pivot screw 66, said plate lying` tlatwise against the outer lace oic carriage end plate 1l.a and beingheld thereagainst at its rear end, to swing about screw 66, by said screw 66 and the right hand side arn'i or release bail 65 which extends across the outer face ot' the rear end oil the plate. The. head ot' a shoull ingscrew 76, tapped into car riage endplate 11a and carriage base plate ll at the lower front corner of said end plate, engages the outer tace oli plate 76 along the arcuate lower edge 76 ot the plate 76 to hold the forward end of the plate 76 against outward movement from the tace of carriage end plate il, the lower edge portion 7 61 of plate 76 being curved 'forward and upward about pivot aperture 77 a center and 'torming at its forward end the rear wall of a notch 76" in the plate 6 in which the shank ot screw 78 engages when the stop plate is in v4of the spring drum l2 -while the carriage is centered and the es apement released.

An integral stop-carrying arm 79 depends from the forward edge of plate 76, said arm 'being bent routwarc its junction with the plate to lie flatwise entirely to the right of 4carriage end` plate lla in a plane perpend cular .to the plane of the stop plate 76 and end plate llEL and parallel with the path lof travel of the carriage. A centering stop in the form of an integral lug 8O extends inward or toward the left from the lower end of arm 79, said lug lying flatwise in the same plane as arm 79. By this arrangement of stop 80 Vand its supporting arm 79 edgewise to the line of impact, the stop device has the necessary strength and rigidity notwithstanding the fact that itl is stamped from thin sheet steel stock.

Stop lug 8O normally extends inward under the carriage base plate ll, terminating short of the rigat hand end of raceway 2O on the said base plate, and is adapted to normally travel above the carriage bed l2 forward of raceway 2l on said bed. The stop plate .76 is normally urged upward by a return spring 8l connected at its lower end with a lug 82 stamped outward from the rear end portion of said plate, said lug :being located below and forward of pivot 66 and said spring` extending upward and forward from said lug to a stud 88 held to and projecting outward from carriage end plate lla at a point forward of the platen shaft. rllhc straight upper edge 7bU of plate 76 normally abuts flat against the straight edge 84a of a sheet metal cam plate 84 which is substantially triangular' and is pivoted substantially centrally thereof on the platen'shaft l0 at the outer face of carriage end plate lla, directly over plate 76. The rear edge 841i of cam 84 normally extends upward and rearward substantially at a right angle to edge '84 and normally is substantially in engagement with stop stud 68 for release bail 65-65a. An operating arm 85 formed integrally with cam 8d normally extends upward and rearward from the oppor edge of the cam and is bent inward over the upper edge of the carriage end plate to forma finger piece 85a adapted to be moved forward and downward around the upper front edge. portion of the carriage end plate ll which is curved in an arc substantially concentric with the platen shaft. Stud 68 is adapted to be engaged by edge 84" of cam 84. to prevent any material backward swinging of the operating arm 85 from normal position, and it will be evident that the engagement of plate edge 76C with `cam edge 84a will arrest swinging of the stop plate 76 by its returnvspring 8l with the parts positioned as in Figs. l to el, l0, 13, and l5, wherein the stop lug 8O is in its normal ineffective posi.- 'tion vbefore described.

Stop lug 80-is adapted to lbe positioned for engagement with the right vhand end edge of the carriage bed 'i2 to arrest the carriage 1n centered position. Preferably said yend edge of the bed is provided with a notch, as 86, the inner lend wall of which is adapted to be engaged by the inner end of lug 80 and the forward wall of which lies preferably parallel with and close to the front face of lug 8O when vthe lug enters said notch, for the vpurpose hereinafter described. To center the carriage it i-s 'necessary to first move the carriage to the right of centered position, if not alr ady there, which may be done by returning the carriage by the usual line-spacing and carriage returning lever, for example, or by means of the Enger wheels. The construction and arrangement of the stop plate and its stop lug are such, as above described, that the cam 8e cannot be actuated to set the stop in stopping position vand release the escapement unless 'the stop lug is to the right of the right hand end of the carriage bed, as at-` tempted roc'lting of the cam would be prevented by iininediate engagement of the lower edge of the stop lug with the top face ofthe carriage bed 12.

lflfith the carriage at any point to the right of centered position, all that is necessary to be done to center the carriage is for the operator to pull forward on finger piece with the forelinger of one hand, for example, until rocking ofthe cam 84 is arrested by its operating arm 85 striking the spring anchor stud 88, whereupon the carriage will instantly jump to the left to centered position where it will be arrested by stop lug 8O engaging the inner end wall of notch 86 in carriage bed l2. The above described rocking of cam 8d carries the cam to thel position shown in Figs. ll and 12, in which the pointed forward end or nose portion 845 of the cam has roche-d stop plate 76 downward about pivot 77 to carry lug` 8O into the plane of carriage bed l2 and directly opposite the notch 86 in the bed. This movement of plate 7 6 carries spring anchor lug 82 on the plate rearward. saidlug rocking the escapement releasing bail to its releasing position by rearward pressure on a :linger 87 extending upward from the right hand end -of the cross-bar of the bail and normally engaged behind said lug 89,. Fin ger 8'? is bendable fore and aft for purposes of adjustment to insure full release movement of the bail when operated by the stop plate. lt will be obvious, therefore, that the setting of the centering stop to effective position simultaneously releases the escapement so that fil) the carriage will instantly jump to the centered position under the pull of spring drum e2.

In order that the stop may not return to normal position during such jumping movement, and until the operator again desires to use the machine, operating arm 85 of the cam and its stop stud 83 are so disposed that nose 84C of the cam (when arrested by said stop stud with the centering stop in eftfective position) engages the edge 76C of stop plate 76 at a point in which said plate and its spring tend to rock the cam in counterclockwise direction, as viewed in Fig. 12, and thus yield ably hold the cam in its shifted position where it prevents unsetting of the centering stop until the cam is restored by hand to normal position.

By providing an abutment engaged by the centering stop, in the 'form of the end wall of notch 86, a rearwardly facing shoulder (comprising the front wall ot said notch) is provided which acts as an auxiliary holding means to prevent unsettling of the centering stop while the carriage is in centered position and the machine is enclosed in its case. )When enclosed in the carrying case, endwise travel oi the carriage is prevented by the side walls orf the case, and in some f known constructions, as in the case of the Corona Four machine, by special carriage holding means on the case. It will be obvious that, with the construct-ion described and shown herein, even if cam 84 should (as the result oi' shocks in transportation, or from any other canse, such as disconnect-ion or breakage ol' spring 81) accidently return to normal position while the machine is encased, or be accidently rocked to normal position before closure oit the case, stop plate 56 cannot swing to normal position to release the escapement since lug 80 is engaged behind the front wall of the notch 86.

lNhen it is desired to vuse the machine following a carriage-centering operation, cam 84 is rocked baci; to normal position through the linger piece 855L and the carriage moved to the right to carry lug 8O out ot notch 8G. rlhe nose Sai-C of the cam is made adjustable by slotting the cam upward from edge 84e a short distance Yfrom the pointed Yfront end ot the cam to permit bending of the nose in the plane oit the cam body.

By providing a rigid centering stopon the carriage, acting to release the escapement when mover to set position, and rigidly held in set position, and a rigidly supported and non-yielding stationary part engageable by the centering stop to arrest the freed carriage in centered position, the centering means is adapted to withstand shocks incident to arrest or' the carriage and is made certain or positive in its action, and by arranging the co-acting stopping elements rwith relation to each other and to the escapement release means of the machines as disclosed herein, the traveling stop may be set and locked in set position, and be employed to release the escapementto permit the carriage to jump automatically into centered position from any point to the right oi centered position.

The cam 83 is rotatably and removably held on the platen shaft l0 by being confined between end plate lla and hub a of linger wheel 70, the hub o1n said inger wheel being detachably locked on the platen shaiit by a set screw 88, as shown in Fig. 13.

What I cla-im is:

l. In a typewriting machine, a springdriven platen carriage, escapement mechanism Yfor the carriage, a normally ineffective carriage-centering stop pivoted on the carriage to swing transversely of the path oi' travel of the carriage, a co-operating nontraveling stop on the machine, a manually rockable stop-setting cam pivoted on the carriage to swing about an airis parallel with the pivotal axis of the centering stop and adapted to directly rock the centering stop to eliective position, escapement releasing means operable by the centering stop upon movement of said stop to eiiective position, and a spring connecting the centering stop with the carriage to norma ly hold the stop in inei'liective position, said cam and springreturned centering stop being so engaged when the stop is moved to set position as to hold each other against return movement.

2. In a typewriting machine, a carriage bed having a transverse notch in its right hand end, a traveling platen carriage mounted on said bed and spring urged toward the lett, a stop member pivoted on the carriage at the right hand end ot the carriage to swing about an axis parallel with the path of travel ot' the carriage between an ineiiiective position in which the stop may travel past the bed and an effective position in which the stop is adapted to engage the inner end wall of said notch when the` carriage reaches a substantially central position on the bed, stop setting means inounted Ion the carriage adapted to swing the stop to eective position, a spring connected with the stop and carriage acting normally to hold the stop in ineffective position, escapement mechanism i'or the carriage, means whereby the setting ot the stop releases the carriage from control of its escapement mechanism, and means whereby the stop-setting means and stop mutually co-act to releasably lock each other in set position.

3. In a typewriting machine, a traveling carriage, a normally ineiiective centering stop pivoted on the carriage, a return spring for Asaid stop, stationary means engageable by said stop when the stop is set into eiiective position to arrest the carriage in centered position, a hand-operated cam pivoted on the carriage for setting the stop against the resistance of its return spring` into position for co-acti on with said stationary means and normally positioned to permit return movement of the stop to inef're tive position, means whereby said cam yieldably held in stop setting,` position by the set stop, and means independent or the carriage engageable by the set stop only when the carriage is centered to prevent movement of the stop to un-set position irrespective of return movement oi the cam to its normal position.

4l. ln a typewriting` machine, a traveling carriage, a normally ineffective centering stop pivoted on the carriage, a return spring for said stop, stationary means engageable by said' stop when the stop is set into e'llective position, a hand-operated cam pivoted on the carriage for setting' the stop against the resistance of its return spring into position for coaction with said stationary means, and normally positioned to permit return movement oi the stop to ineffective position, means whereby said cam is yieldably held in stop setting position by the set stop', means independent of the carriage engageable by the set stop only when the carriage is centeredy to prevent movement of they stop to unset position irrespective ot return movement ot the cam to its normal position, eseapement mechanism for the carriage, and means operable by the stop upon movement to effective position 'for releasing the carriage from control of the escapement mechanism, said releasing means sing'- held in carriage releasing,` position by the set stop.

5. ln a typewriting machine, a travelingl spring driven platen carriage, escapement mechanism 'for the carriage, escapement releasing,` means including a hand-operated member on the carriage, a stationary stop, a stop pivoted on the carriage to swing to and from an ineffective position with relation to said'4 stationary stop, a hand-operated stopsetting caml pivoted on the carriage and e'leetive, when rocked from normal position, on said pivoted stop to cause said stop to move to set position and actuate said hand-operated member of the escapement releasing means, areturn spring tor the pivotedstop, said. pivoted stop and pivoted cam beingl mutually co-operative to hold each other in stop-setting position and the pivoted stop co-operating with said h and-operated member to maintainl the escapement released until the cam is restored to normal position to release the set pivoted stop.

6. ln a typewriting machine, a traveling carriage, escapement mechanism for the carriage, cooperating` pivoted and fixed stops onthe carriage and a relatively stationary part of the machine, respectively, and adapted when enga-ged to arrest the carriage substantially midway between its .limits of travel, a linger piece supported on the carriage for swinging movement about a tired ieeaseo axis, and means whereby swingingl oli-said finger piece inv one direction releases the carrriage from control of the escapement mecha'nism and swings said pivoted stop and locks itk to move in a path in which the fixed stop is located.

7. ln a typewriting machine, a traveling' carriage, escapement mechanism tor the earriage, cooperating; pivoted and fixed stops on the carriage and a relatively stationary part of the machine, respectively, and adapted when engaged to arrestk the carri-age substantially midway between its lim-its ofy tra-vel, a finger piece supported on theI carriageY for swinging movement about a fixed anis, meansY whereby swinging` of' said? finger piece in one direction releases the carriage from' control of the escapement mechanism and swings saidv pivoted stop and locks ittomove in aI path in which the fixed stop is located, and means whereby actuation or" said finger-piece to release the carriage and position1 said pivoted 'stop is preventedl when the carriagehas been ted by the escapement to a point at which the pivotedl stop has passed the fixed stop.

8. lnv a typewriting machine, avcarriage spring-driven in onel direction, an eseapement for the carriage, a pairl of stops for arrestingadlvance of the carriage substantially midway they limits of its travel upon release of the same from control ofvthe-escafpement, one of said stops being` mounted on` the carriage and normally adapted topass the other, h and-operated means on thecarriage` adapted to set and locl the stop on the carriage to travel in a path in which the other stopis located, and simultaneously effect release oii the carriage from cont 'ol of the-escapement, and meansv whereby said hand-operated means is effective to set the carriage stop and release tlie-esca-pement only when the-carriage stop, when so'set', ismovable by the ca mage-driving spring toward' the other stop..

9. ln a type\vriti-n,f `V` machine, a carril bed, a spring driven carriage mounted on t bedhaving end plates, an escapement for the carriage,` eseapement releasing means, a plateny on the carriage having a shalt extending` through and' journalledf' i-n4 said' end plates, a stop setting1 cam pivoted onthe pla-ten sha-tt and provided with a finger piece, alinger wheel hel d to one end of the platen shaft and holding* said cam against'the outer face ol the adjacent end plate, a carriage stop member pivotally held at one end against the oui'- er face of the end plate against which the cam is held anda extending und-er the cam, a retaining member held to said carriage end plate and engaging the outer faceoii the carriage stop member in all positions of said stop member, a spring connecting said carriage stop member with the carriage to norman)l swing the stop member upward? to a position in which it is adapted to travel past the bed, saidv cam being roelrabl'e in one direction by he n; said cam against the outer face of the ao, ,cent end v)late a. carriage sto a member infotally held at one end against the outer tace ci the. end plate against which the cam is held and extending under the cam, a retaining member held to said carriage end plate and eigaging the outer face of the ca rriage stop member in all positions of said stop member, a spring connecting said carriage stop member with the carriage to normally swing the stop member upward to a position in which it is adapted to travel past the bed, said cam being rockab-le in one direction by its linger piece to swing the carriage stop downward into position 'for engagement with the right hand end of the bed, and to hold said stop member depressed against the ten sion ol2 its return spring nntil manually rocked in thc opposite direction.

l1. ln a tyfk'iewriting machine, a carriage bed, a spring driven carriage mounted on the bed having` nd plates, an eseapement for the carriage, escanement releasing means, a platen on the lage having a shaft extend* ing through and ournalled in said end plates, a settir cani pivoted on the platen shaft and provid n ith a linger piece, a linger `fnd of the platen shaft and wheel heldito against the outer tace oi the holding said cam adjacent end ipte, a carriage stop member pivotally held at one end against the outer tace el' the end plate against which the cam held and extending under the cam, a retain ing member held to said carriage end plate and engaging the outer tace of the carriage step member in all positions of said stop meml z", a spring connecting said carriage stop member with the carriage to normally swing the stop member upward to aposition in which it is adapted to travel past the bed, said cam beingl roclr ble in one direction by its linger piece to swing the carriage stop downward into position for engagement with the right hand end of the bed, said stop member being restrained by the carriage bed from movement by sai( cam when to the left of the right hand end el' the carriage bed., and said stop member being operative on the escapement releasing means to release the escapement when the stop member is depressed by the cam.

12. ln a tygewriting machine, the combina tion of a traveling platen carriage, a sheet metal carriage stop member having a 4Hat body part abutting one end of the carriage pivotally held at one end to said 'carriage end to swing tran rersely of the path ot travel of the carriage and formed at its other end with an integral stop lng lying flatwise in a plane perpendicular to the plane of said body part and parallel with the path oi travel ot the carriage and having an abutment edge facing toward the opposite end of the carriage, means rigidly held to the carriage (5o-operating with the body part of said stop member between said lug and the pivot of said member te take np shock transmitted to said body part upon engagen'ient ot the abutment edge ot the lng with a co-operating stop, and a return spring connected with said stop member and the the stop men'iber in inactive position.

13. In a typewriting machine. a springdriven platen carriage, escapement mechanism for the carriage, an escapement releasing device and a carriage stop both pivotally held to the carriage to swing about a common axis and haxjing engaging portions whereby7 the escapen'ient releasing member is movable by the stop to escapeinent releasing position, means normally holding the stop and releasing member in inactive position, a manually operable actuating and locking member for the stop piroted on the carriage and adapted when rocked in one direction to shift the stop and releasing member to active position and loci; them there until manually rocked in the opposite direction, and a stationary stop engageable by the carriage stop when the carriage stop is in active position to arrest the released carriage substantially n'iidway between its maximum limits of travel.

la. ln a typewriting machine, a roller platen havinga shatt, a platen carriage having end members in which said sh ytt is journalled, a linger wheel detaehably held to one end of the shatt at the outer side ot the adjacent end member, a lined stop independent of the carriage, a co-operating carriage stop held to the carriage and normally Y ig with the carriage in a path te pass the lined stop, and a handbperable stop-setting member pivoted on the platen shalt and held between said linger wheel and the adj acent end member et the carriage against endwisc movement on the shaft, said setting member being effective when rocked in one direction to swing the pivoted carriage stop into a. position for engagementvith the lined stop.

l5. ln a typewriting machine, a roller platen having a shaft, a platen carriage having end members in which said shaft is jenn nalled, a linger wheel detachablj.y held toene end of the shaft at the enter side ci the ad.- jacent end member, a fixed stop indeiiendent of the carriage, a co-operating carriage stop pivotally held to the carriage and normally carriage and normally holding.

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traveling with the carriage in a path to pass the lined stop, a return spring for the pivoted stop urgingi-t to normal position, and a handoperable stop-setting memberI pivoted on the platen shaft and held by said finger wheel andthe adjacent end member of the carriage in (3o-operative relation with the pivoted stop, said setting member normally limiting re.- turn movement of the pivoted stop and being effective, when rocked in one direction from normal position, to swing the pivoted stop into a position in which said stop is adapted to engage the fixed stop and in which the setting member and pivoted stop releasably hold each other in shifted position.

16., ln a typewritino machine, the combination of a spring-driven platen carriage,

4escapement mechanism for controlling the feed of the carriage, a carriage centering stop pivotally held to the carriage to travel bodily therewith and to swing relatively thereto transversely of the path of travel of the carriage into and out of effective position, a nontraveling stop located at a point to arrest the carriage approximately midway between the limits of maximum carriage travel when engaged by the centeringstop and out of the path of travel of said centering stop when the centering stop is in ineffective position, an actuating member for the centering stop pivotally held to the carriage to swing about an axis parallel. with the pivotal aXis of the centering stop while in contact with said stop and having a finger-piece by which it is adapted' to be manually rocked, a spring connecting the centering stop with the carriage for normally urging the centering stop about its pivot into ineifective position, releasing means for the escapement mechanism directly operable by the centering stop upon movement of said stop to effective position, said actuating member being engageable by the centering stop to determine the normal ineffective position of the centering stop and being arranged to directly engage and swing the centering stop into its effective position when manually rocked about its pivot in one direction, and stopping means engaged by the actuating member to arrest pivotal movement thereof in stop-setting direction with the centering stop in set position and exerting pressure on the actuating member in a direction urging said member in stop setting direction.

17. In a typewriting machine, a springdriven platen carriage, escapement mechanism for the carriage, escapement-releasing means including a member on the carriage directly operable manually to effect a release of the escapement, a carriage centering stop mounted on the carriage to travel therewith and shift relatively thereto, a cooperative non-traveling stop located to arrest the carriage in .a substantially centered position when engaged by the centering stop, a return spring connecting the centering stop inea-,sea

with the carriage to normally hold the eentering stop in position to travel past the nontraveling stop, manually operable setting Asetting direction at a point at which said setting member is held in stop-setting position by bach pressure thereagainst of the spring-urged set stop, said centering stop being arranged to directly engage and shift said manually operable member of the escapement-releasing means to escapement releasing position during movement of thestop-setting member to stop-setting position.

18. in a typewriting machine, the combination of a spring-driven platen carriage, esicapement mechanism for controlling the feed of the carriage, a carriage centering stop pivotally held to the carriage to travel bodily therewith and to swing relatively theretoy transversely of the path of travel of the car-v iage into and out of effective position, a non.- traveling stop located at a point tol arrest the carriage approximately midway between the limits of maximum carriage travel whenl erigage'd by the centering stop and outl of the path of travel of said centering stop when the centering stop is in ineffective positions, anF actuating member for the centering stop pivotally held to the carriage to swing about an axis parallel with the pivotal axis of the centering stop while in contact with said stopy and having a linger-piece by which it is adapted to be manually rocked, a spring con-- necting the centering stop with the carriage for normally urging the centering stop' about its pivot into ineffective position, and releasing means for the escapement mechanism. directly operable by the centering stop uponnovement of said stop to effective position, said actuating member being engageable by the centering stop to determine the normal. ineffective positionv of the centering stop and being arranged to directly engage andY swing the centering stop into its effective position when manually rocked about its pivot in onedirection.

lS). ln a typewriting machine, a spring driven platen carriage, a carriage centering stop mounted on the carriage to travel therewith and shift relatively' thereto, a cooperative non-traveling stop located to arrest the carriage in a substantially centered position when engaged by the centering stop, a returnv spring connecting the. centering stop with the carriage to normally hold the centering stopV in position to travel past the non-travelingrr stop, manually operable setting member for the shiftable centering stop mounted on they lll) losv

carriage to travel therewith and shift relatively thereto and directly engageable with the centering stop to shift said stop into a position in which it is set for engagement with the non-traveling` stop, means tor arresting manual shifting movement ol" said stop setting member in stop-setting direction at a point at which said setting member is held in stopesettinkg position by back pressure thereagainst oit the spring-urged set stop, and means for releasing the carriage from the control of the escapement directly engaged and operated to tree the carriage by the centering stop during movement ot the stop by its setting member to set position.

20. in a typewriting` machine, a springdriven platen carriage, escapement mechanisnii itor the carriage, normally ineliective carriagecentering stop pivoted on the carriage to swing transver, ly ot the path oit travel of the carriager into and out ot etlective position, a cua-operatingl non-traveling` stop on the machine, a manually roclrable stop-setting cam pivoted on the carriage for direct rocking ot' the centering` stop thereby into eltective position, means operable by the cente ing;l stop during movement ot said stop to etl'ective position for freeingl the carriage from control ot the escapement mechanisnu and a spring 'lor normally yieldably holding; the centering` stop in ineli'ective position, said cam and spring` urged centering" stop beingl adapted 'to releasably hold each other against return mov ent when the stop is moved to eli'ective position by the cam.

2l. ln a typewriting machine,` a traveling' p aten carriage, a nonetraveling carriage stop, a traveling carriage stop mounted on the carriage to travel bodily with the carriage and tor shi Yirav movement relatively to the carriage between an unset position in which it is so located as Ato adapt it to pass the non-traveling stop and a set position in which it is so located as to abut the non-travelin stop upon travel et the carriage to a point at which the carriage is substantially centered over the 'trame olf the machine, a manually shittable setting member tor the traveling; sto p mounted on the carriage to travel bodily therewith and tor manual shitting; movement relatively to the carriage between a stop-setting' position and a normal unset position in which the traveling' stop is free to move to its normal unset position, said setting' member and travcling stop being; normally spring-held in direct engagement with each other in unset position and mounted tor movement relatively to each other while engaged against the spring' influence upon manual shitting: ot the setting' member in one direction trom the normal relative unset posit-ions o't said member and stop to the relative set positions of said member and stop in which said member and stop mutually coact under the spring influence to releasably hold each other against return movement.

ln a typewriting machine, a traveling platen carriage, y a non-traveling carriage stop, a traveling` carriage stop mounted on the carriage to travel bodily with the car riage and :tor shitting movement relatively to the carriage between an unset position in which it is so located as to adapt it to pass the non-'traveling' stop and a set position in which it is so located as to abut the nontraveling stop upon travel of the carriage to a point at which the carriae is substantially centered over the trame or the machine, amanually shiittable setting member tor the travcling stop mounted on the carriage to travel bodily therewith and for manual shittingl movement relatively to the carriage between a stop-setting position and a normal unset position in which the traveling` stop is tree to move to its normal unset position, said set ting` member and traveling` stop being pivotally mounted on the carriage for direct shitting;` oft the stop to set position by pressure ot said member on the stop upon shitting ot the setting member relatively to the carriage from normal to stop-setting position, and a spring tor yieldably holding the traveling stop in unset position, said member and travcling stop and spring being;L so arranged that the member and stop are held against return movement trom set position bythe spring until the setting member is positively shifted manually in the reverse direction.

QP). ln a typewriting` machinee a traveling platen carriage, a non-traveling,` carriage stop, a traveling` carriage stop mounted on the carriage to travel bodily with the carriage and for shitting movement relatively to the carriage between an unset position in which it is so located as to adapt it to pass the non-traveling stop and a set position in which it is so located as to abut the non-traveling stop upon travel ot the carriage to a point at which the carriage is substantially centered over the frame of the machine, a manually shittable settimo` member for the traveling stop mounted on the carriage to llO travel bodily therewith and 'lor manual shitting movement relatively to the carriage between a stop-setting` position and a normal unset position in which the traveling' stop is gti-ee to move to its normal unset position, and spring for holding the traveling stop in unset position, said member and traveling stop and spring being corelated when the member reaches stop-setting position ior mutual engagement ofthe member and stop under force ot the spring' in relative positions olf the. stop and; member in which they coact to hold each other against return movement.

2li. In a typewriting machine, the combination of a platen carriage, escapement mechanism Jfor the carriage, a non-traveling stop for arresting the carriage, and cooperative manually settable stop mechanisml traveling With the carriage comprising` tWo independent members pivotally mounted on the carriage to turn about ditterent axes7 one of said members acting directly 'on the other, when swung in one direction, to swing said other member to and lock it in a position in which its travel Will be obstructed by the non-trav- 'eling stop When the carriage advances to a substantially centered position Widthwise otl the machine frame, and means operable by said other member to release and maintain the carriage ifree of control of the escapement While said member is loc-hed in its position for obstruction by the non-traveling@` stop.

25. In a typewriting machine, a platen carriage escapement mechanism for the carri age, an unyielding stop pivoted on the carriage, a cooperating unyieldinga)- non-traveling stop engageable by the pivoted stop to arrest the carriage in substantially centered position Width-Wise off the machinec frame, a rigid hand-operated member pivoted onthe carriage having; a handle part and a vpart for directly engaging and rocking the pivoted stop from an ineffective position into a set position in which ifttravels in a path for abutment thereof' against the non-traveling` stop, and a return spring for the pivot-ed stop normally hold-ingsaid stop in an unset ineifective position in which it is adapted to travel past the non-traveling stop, said hand-operated member being coactive directly With the pivot'ed stop to rigidly hold said stop in its set position when said member is rocked to stop-'setting position.

26. In a typeivriting machine, a platen carriage, escapement mechanism for the carriage, an unyielding stop pivoted on the carriage, a cooperating` unyielding non-traveling stop engageable by the pivoted stop to arrest the carriage'in substantially centered position Widthwise of the machine frame, a rigid hand-operated member pivoted on the carriage having a handle part and a part for directly engaging` and rocking the pivoted stop 'from an ineffective position into a set position in which it travels in a path for abutment thereof against the non-traveling stop,

a return spring for the pivoted stop normally holding' said stop in an unset ineffective position in which itis adapted to travel past the non-traveling stop, said hand-operated member being coactive directly With the pivoted stop to rigidly hold said stop in its Set position Whe-n said member is rocked to stop-setting position, and means operable. by said pivoted stop during;` setting' thereof to release the carriage from control of the escapement, said releasing` means being held in releasing position by the pivoted stop: While said stop is held in set position.

In testimony whereof l hereunto affix my signature.

ALONZO B. RLY?. 

